Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| D651672 | Selectorized dumbbell having kettlebell style handle | 01/03/2012 |
| D644701 | Selectorized dumbbell having kettlebell style handle | 09/06/2011 |
| D643481 | Dumbbell | 08/16/2011 |
| D639358 | Combined dumbbell and base | 06/07/2011 |
| D635622 | Light weight plastic play weight for kids | 04/05/2011 |
| D628661 | Dumbbell | 12/07/2010 |
| D628660 | Exercise device | 12/07/2010 |
| D628248 | Dumbbell | 11/30/2010 |
| D628250 | Dumbbell | 11/30/2010 |
| D628249 | Hand-held exerciser | 11/30/2010 |
| D625371 | Vibration dumbbell | 10/12/2010 |
| D624614 | Dumbbell | 09/28/2010 |
| D617854 | Dumbbell weight plate | 06/15/2010 |
| D610636 | Dumbbell | 02/23/2010 |
| D606133 | Weight plate | 12/15/2009 |
| D597612 | Barbell/dumbbell | 08/04/2009 |
| D597613 | Dumbbell | 08/04/2009 |
| D597154 | Bat shaped dumbbell | 07/28/2009 |
| D578172 | Weighted exercise apparatus | 10/07/2008 |
| D574450 | Dumbbell | 08/05/2008 |
| D567311 | Dumbbell | 04/22/2008 |
| D566207 | Weight plate | 04/08/2008 |
| D566209 | Weight plate for barbells | 04/08/2008 |
| D566208 | Weight plate for barbells | 04/08/2008 |
| D562920 | Dumbbell | 02/26/2008 |
| 7300389 | Weight plate An improved weight plate includes a planar body having a central opening for receiving a barbell or dumbbell bar therethrough. The weight plate includes oppositely facing flange members extending partially about the perimeter of the weight plate. The opposed ends of... | 11/27/2007 |
| 7261678 | Adjustable dumbbell system A dumbbell is described including a handle having a grip and at least one end, an inner plate mounted on the handle adjacent the grip, in a fixed rotational orientation, a support plate rotationally mounted on the handle adjacent the inner plate, at least one collar... | 08/28/2007 |
| D546908 | Dumbbell | 07/17/2007 |
| D545927 | Dumbbell | 07/03/2007 |
| 7229391 | Resistance exercise machine with stacked resistance packs A resistance exercise machine has a frame that includes a base on the floor and upright posts on the base. Resistance packs mounted for adjustment up and down on the posts are equipped with cams that compensate for the increased resistance resulting from increasing ... | 06/12/2007 |
| D540894 | Adjustable dumbbell | 04/17/2007 |
| D540405 | Adjustable dumbbell | 04/10/2007 |
| 7198591 | Weight plate for interlocking and weight adjustment A weight plate have integrally formed handles is provided. The weight plate has a weight plate body having an outer periphery, a first side, and a second side that is substantially flat. The weight plate also has a central bore extending through the body, a raised f... | 04/03/2007 |
| D538359 | Exercise dumbell with bottle ends shaped like apples | 03/13/2007 |
| 7182715 | Kettlebell A kettlebell is disclosed herein having, in its preferred embodiment, a pair of oppositely-facing, generally frustum-shaped weightplates disposed about a first axis that is perpendicular to the axis of its handle. The frustum shape reduces the force of impact agains... | 02/27/2007 |
| D536752 | Weight training device | 02/13/2007 |
| D535336 | Exercise bar | 01/16/2007 |
| D532465 | Exercise device with removable weight | 11/21/2006 |
| 7131938 | Apparatus for weight heads assembly used on dumbbells Weight head assembly for dumbbells that eliminates a weak point on the handle bar, so as to increase the durability of a handle bar on dumbbells. Under present invention, the ‘stub’ portion, where the handlebar is inserted into the weight heads on the two ends o... | 11/07/2006 |
| 7112164 | Weight lifting bar apparatus A weight lifting bar apparatus usable with free weights which includes two weight bar sections which are angularly oriented upwardly with respect to the main central bar section to facilitate retaining of weights thereon during exercising. The apparatus may also inc... | 09/26/2006 |